Mammoth Lakes, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

172
FXUS65 KREV 150741
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1241 AM PDT Thu Oct 15 2026

.KEY MESSAGES...

* Warmer conditions for the remainder of the week into this weekend.

* Increased east to southeast breezes Thursday into Friday with
  stronger ridge top winds peaking Thursday night.

* Cooler temperatures return next week with increased winds
  followed by chances for rain and mountain snow showers.

&&

.DISCUSSION...

A high-pressure ridge off the California coast building into the
northern Great Basin and a developing low off Southern California
will bring easterly breezes on Thursday (gusts 15-25 mph
generally, 40-50 mph on ridge tops, and up to 60 mph overnight).
Lake Tahoe`s western shores may see choppy waters Thursday night.
As a result, a Lake Wind Advisory is in place for Lake Tahoe from
7 PM thursday through 2 AM on Friday.

By Friday, winds shift to the southeast with afternoon gusts of 15-
25 mph, with localized areas up to 30 mph. Lower humidity
(12-20%) will elevate fire weather concerns in these areas. See
the Fire Weather Discussion for more details.

Winds diminish Saturday, returning to typical southwest/west breezes
Sunday. Temperatures will rise into the mid-to-upper 70s for lower
elevations and near 70 degrees in the Sierra.

An approaching upper-level trough breaks down the ridge early next
week. Monday brings increasing winds with 30-40 mph gusts and
renewed fire weather concerns.

Cooler temperatures in the 50s to lower 60s follow Tuesday through
Thursday. Showers are expected Tuesday night through Thursday (30-
50% chance south of US-50, 15-30% elsewhere), with light rain in
valleys and snow above 8000-8500 feet in Mono County.  HRICH

&&

.AVIATION...

* VFR conditions prevail this weekend under clear skies.
  East/southeast gusts up to 15-20 kts this afternoon through
  Friday. Stronger ridge east winds (40-50 kts) today through
  early Friday may trigger mountain wave turbulence and LLWS west
  of the Sierra and Carson Ranges. HRICH

&&

.FIRE WEATHER...

* Elevated fire weather conditions are noted for Friday over
  northern Washoe, portions of southern Washoe and Lassen counties
  and portions of Mineral County due to gusty winds up to 35 mph
  and low relative humidity ranging 10-15%. HRICH

&&

.REV Watches/Warnings/Advisories...
NV...Lake Wind Advisory from 7 PM this evening to 2 AM PDT Friday
     NVZ002.

CA...Lake Wind Advisory from 7 PM this evening to 2 AM PDT Friday
     CAZ072.

&&

$$